GB554160A - Improvements in or relating to boring machines - Google Patents

Improvements in or relating to boring machines

Info

Publication number
GB554160A
GB554160A GB1639441A GB1639441A GB554160A GB 554160 A GB554160 A GB 554160A GB 1639441 A GB1639441 A GB 1639441A GB 1639441 A GB1639441 A GB 1639441A GB 554160 A GB554160 A GB 554160A
Authority
GB
United Kingdom
Prior art keywords
cutters
wedge
spring
holders
cutter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1639441A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB1639441A priority Critical patent/GB554160A/en
Publication of GB554160A publication Critical patent/GB554160A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/03—Boring heads
    • B23B29/034—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings
    • B23B29/03403—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings radially adjustable before starting manufacturing
    • B23B29/03417—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings radially adjustable before starting manufacturing by means of inclined planes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)

Abstract

554,160. Boring heads or bars. AYERS, R. S., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Dec. 19, 1941, No. 16394. [Class 83 (iii)] Radially movable cutters of a boring head or bar are advanced to cutting position by a spring- loaded slidable member which is operated by contact with a stop member to cause retraction of the cutters and is locked in retracted position by a latch. Cutters 2, Fig. 1, are secured on holders 3 by set screws, the holders being grooved to engage a wedge section 11 of a member guided at 15, 16 and 17 in the cutter bar 1. A spring 18 urges the wedge to expand the cutters as limited by adjustable means such as screw rings 6 that engage shoulders 5 on the holders. The end 13 of the wedge contacts a stop on the machine, or work, or merely the blind end of the bore and compresses the spring 18 till the member is locked by a notch 24 and spring latch 22. The cutter holders are collapsed by spring rings 7. A knob enables the latch to be tripped manually for the resetting of the cutters. In a modification the wedge acts firstly to expand the cutters and then to retract them, thus enabling chamfering to be done. If the chamfer is to be formed at the end of the blind bore the cutters are cranked forwardly. The wedge may be of cam formation to enable a profiled bore to be produced. Instead of a wedge action the sliding member may be connected to the cutter holders by cranked levers. The latching and the cutter-adjusting means may be varied.
GB1639441A 1941-12-19 1941-12-19 Improvements in or relating to boring machines Expired GB554160A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1639441A GB554160A (en) 1941-12-19 1941-12-19 Improvements in or relating to boring machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1639441A GB554160A (en) 1941-12-19 1941-12-19 Improvements in or relating to boring machines

Publications (1)

Publication Number Publication Date
GB554160A true GB554160A (en) 1943-06-23

Family

ID=10076528

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1639441A Expired GB554160A (en) 1941-12-19 1941-12-19 Improvements in or relating to boring machines

Country Status (1)

Country Link
GB (1) GB554160A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2924999A (en) * 1955-03-11 1960-02-16 Walter E Cramer Under-reaming tool
US3486414A (en) * 1967-04-14 1969-12-30 Philips Corp Groove cutting apparatus for an internal bearing surface

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2924999A (en) * 1955-03-11 1960-02-16 Walter E Cramer Under-reaming tool
US3486414A (en) * 1967-04-14 1969-12-30 Philips Corp Groove cutting apparatus for an internal bearing surface

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